Mark Zonder is the drummer of American heavy-metal band Warlord. When the band was in a hiatus, he joined Fates Warning. His artistic name in Warlord is "Thunder Child". He also has his own band Slavior.

He also plays drums on Joacim Cans' solo-project album "Beyond The Gates", and with Kevin Moore's band Chroma Key.

At the moment, he is working with Gary Hughes and the rest of the band Ten on their new studio album named Stormwarning, which was released in early 2011.